Oki LE840 Guide De L'utilisateur page 103

7. SUPPLY SPECIFICATIONS
Fig. 2 Positional Relationship between Core and Ribbon
NOTE: Wind the ink ribbon so that the ribbon center aligns with the core center.
Fig. 3: Connection between Leader Tape and Ribbon
Adhesive
tape
Take-up core
NOTES on using ribbon:
If the difference between the ribbon width and the paper width is too large, the ribbon may wrinkle. Refer
to the table below and choose the paper appropriate to the ribbon width. Even if the ribbon is narrower
than paper, printing can be performed. However, it results in the narrower print range.
LE840T/LE850T
Ribbon width
Appropriate
paper width
The ribbon tension adjustment may be further required according to the ribbon width. In the case a
narrower width of the ribbon is used, if the ribbon tension is strong, the ribbon will wrinkle. According to the
print patterns, fine adjustment of the ribbon take-up motor is required. As a guide, regardless of the print
speed, it should be set to "-3" (FW) and "-1" (BK) for 68-mm wide ribbon, and "-4" (FW) and "-2" (BK) for
50-mm wide or less ribbon, respectively.
Leader
tape
Adhesive
tape
Base
68mm 84ｍｍ
45 to 63 mm 63 to 79 mm
The inked surface faces the outside.
Ink ribbon
Inked side
Treated back side
112ｍｍ
79 to 107 mm
E7-9
7.2 Ribbon
The inked surface
Core